Automatic animal headgate with bottom hinged gates
US4167155A · kind A · utility
6Cited by
5References
9Claims
0Family size
Inventors
Key dates
| Filing date | Aug 18, 1977 |
| Grant date | Sep 11, 1979 |
| Priority date | — |
| Expiry date | Aug 18, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61D2003/003
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The bottom hinged stanchion posts of an animal headgate are displaced from a closed position to an open position by an actuator lever after one of a pair of oppositely engaging one-way locking elements is manually released from engagement with a common lock rod connected to one of the gate posts. An opening pressure applied to the posts in the open position releases the engaged locking element to permit the gate to close under a spring bias applied through the actuator lever.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.